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Westhill HVACWS04Sheet 04 / 06TOOLS / INDEXScale 1:1Release 2026-05-09
Sheet 04TOOLS2026-05-09
[Sheet 04 · Self-service · Engineering-grade]

Answer your first questions before you call.

Five tools that do the math we'd do in a consult — sized for your house, your climate, your bills, your rebates. Inputs save to a share-link. No data captured.

Spec · Tools policy[All tools client-side·No data captured·Inputs save to URL for share-link]
PAGE NOTE
Sheet04 / 06 · Tools
Tools5 · all client-side
Fallback/contact — talk to tech
Residential HVAC system schematicDrafting-style diagram of a typical residential split-system HVAC. Outdoor condenser on the left connects via refrigerant line set to the indoor air handler and furnace on the right; ductwork branches to three supply vents; a thermostat on the wall closes the control loop. Each component is labeled with the calculator that touches it.INDOOR · CONDITIONED SPACEOUTDOOR CONDENSERTOOL · 001 SIZES ITREFRIGERANTEVAP COILFURNACE / BLOWERTOOL · 002 PAYBACK · TOOL · 005 DIAGSUPPLY VENTSTOOL · 004 MAPS COMFORTRETURN72°STATPlate 04 · Residential split-system reference
[ 05 · TOOLS ] · open any · no account requiredView · grid 3+2 / 6-col
[ ALT ]Rather skip the math?A NATE tech can run these for you in fifteen minutes — same numbers, same answers.
Sheet 04 / 06 · Doc R2-004 · 2026.05.09